<!--
 * Tencent is pleased to support the open source community by making BK-JOB蓝鲸智云作业平台 available.
 *
 * Copyright (C) 2021 THL A29 Limited, a Tencent company.  All rights reserved.
 *
 * BK-JOB蓝鲸智云作业平台 is licensed under the MIT License.
 *
 * License for BK-JOB蓝鲸智云作业平台:
 *
 *
 * Terms of the MIT License:
 * ---------------------------------------------------
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
 * to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of
 * the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
 * THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
-->

<template>
    <span ref="source" style="display: none;">
        <slot />
    </span>
</template>
<script>
    import _ from 'lodash';

    export default {
        name: 'ElementTeleport',
        props: {
            target: {
                type: Function,
                default: () => document.querySelector('#siteHeaderStatusBar'),
            },
        },
        created () {
            this.childNodeSet = new Set();
            // eslint-disable-next-line no-underscore-dangle
            this.move = _.debounce(this._move, 30);
        },
        updated () {
            this.move();
        },
        mounted () {
            this.move();
        },
        beforeDestroy () {
            this.remove();
            this.childNodeSet.clear();
        },
        methods: {
            remove () {
                const $targetParent = this.target();
                this.childNodeSet.forEach((item) => {
                    if ($targetParent.contains(item)) {
                        $targetParent.removeChild(item);
                        this.childNodeSet.delete(item);
                    }
                });
            },
            _move () {
                this.remove();
                if (!this.$refs.source) {
                    return;
                }
                const $targetParent = this.target();
                this.$refs.source.childNodes.forEach((childNode) => {
                    const realNode = childNode.cloneNode(true);
                    this.childNodeSet.add(realNode);
                    $targetParent.appendChild(realNode);
                });
            },
        },
    };
</script>
